High-performance crossbar design for system-on-chip

A new low-swing pass-transistor logic style for designing high-performance crossbar switches for system-on-chip applications is proposed. The new pass-transistor architecture uses current-switching and end-to-end swing restoration to improve the crossbar performance. The architecture is verified in 0.35 and 0.25 μm CMOS technology. The 4-b 4x4 crossbar switch in 0.35 μm CMOS occupied an area of 1.4 μm² and achieved 36 Gb/s. Analysis suggests that the new logic style can be used to design multi-Tb/s crossbar switches in 0.18 μm and lower CMOS technology.